Use the test signal to confirm your audio setup is working correctly.
To test the on-board sound card:
To test an external USB sound card:
If no audio output is produced, check the Status page for errors in the log:
gstreamererrors indicating problems with audio mode settings.
/etc/jack.plumbing) contains the correct connection definitions.
~/.pulse/client.confis set to enable Pulse to autospawn.
Disable the test signal once audio setup is working. Enable Audio In Source, if necessary.
There are no input level controls “out-of-the-box” with Jack audio, so if further control over the input level is desired, the configuration must be updated to include jack-mixer. Using jack-mixer programs requires a modified jack.plumbing configuration with connections defined between the openbroadcaster ports, the jack-mixer control and system output.
Create a new configuration file called .jack.plumbing in the home directory (make sure it has the preceeding dot). This will override the system defaults.
obsuser@obsource:~$ `nano ~/.jack.plumbing` #connect Audio Inputs to OpenBroadcaster Inputs (connect "system:capture_1" "openbroadcasterin:in_audiosrc_1") (connect "system:capture_2" "openbroadcasterin:in_audiosrc_2") #Connect Openbroadcaster Outputs to Audio Outputs (disconnect "openbroadcasterout:out_audiosink_1" "system:playback_1") (disconnect "openbroadcasterout:out_audiosink_2" "system:playback_2") (connect "openbroadcasterout:out_audiosink_1" "jack_mixer:OB_In L") (connect "openbroadcasterout:out_audiosink_2" "jack_mixer:OB_In R") (connect "jack_mixer:OB_In Out L" "system:playback_1") (connect "jack_mixer:OB_In Out R" "system:playback_2")
If Jack is already running, it will load the new configuration. Open the jack-mixer control from the Panel (bottom right of Desktop, icon to left of VLC). This will open a mixer control, with an input channel on the left and Main output channel is on the right. The sliding control for the input channel can be used to set the level for the line-in (input) signal. The control on the right has no effect on the output.
If Jack is not running ensure it is configured in the Dashboard, and reboot the Player, and open the jack-mixer control.
NB: When using jack mixer, the jack-mixer control must be opened manually from the Panel Icon to activate the control. Once the control is closed, the output will stop playing. The control must be visible and indicating signal bars for output signal to be audible. The mixer control must be reopened after a reboot, or no sound will be produced.
To open the jack mixer control in headless mode), use the command:
jack_mixer -c ~/.openbroadcaster/init_mix_vol --no-lash.
To restore the original configuration of jack.plumbing, without the jack-mixer control, edit ~/.jack.plumbing file to define the following connections:
#obsuser@obsource:~$ nano ~/.jack.plumbing #connect Audio Inputs to OpenBroadcaster Inputs (connect "system:capture_1" "openbroadcasterin:in_audiosrc_1") (connect "system:capture_2" "openbroadcasterin:in_audiosrc_2") #Connect Openbroadcaster Outputs to Audio Outputs (connect "openbroadcasterout:out_audiosink_1" "system:playback_1") (connect "openbroadcasterout:out_audiosink_2" "system:playback_2")
‘H’ or ‘T’ pads may also be fabricated to accomplish the same level of attenuation.For a balanced signal, use an H-Pad: input_impedance=30k Ω, output_impedance=10k Ω. The example below provides approximately -20dB of attenuation using resistors R 1/2= 12k Ω; R 2=3.3k Ω; R 3/2=3.3k Ω (ground wires should also be connected).